Abstract: A fluid delivery device for an injection device for introducing a fluid into a work chamber of a ground milling machine, comprising a fluid supply chamber having at least one outlet opening, the outlet opening being closable by a linearly displaceable tappet. The tappet includes an opening region in which it has a smaller cross-sectional area than the minimum cross-sectional area of the outlet opening, and a tappet head for the closure of the outlet opening, the tappet head having a cross-sectional area that includes the cross-sectional area of the outlet opening. Further, the fluid delivery device comprises a displacement device for moving the tappet between a closed position, in which the outlet opening is closed by the tappet, and an open position, in which the outlet opening is open for delivering fluid outward out of the fluid supply chamber.

Abstract: The present invention relates to a composite tool comprising at least two milling tool holders, to a milling tool holder for such a composite tool and to a milling drum equipped with such milling tool holders. According to the present invention, a milling tool holder is utilized for supporting a tool replacement device during tool replacement of the milling tool in the milling tool holder that precedes it in the peripheral direction. To this end, according to the present invention, a supporting area is provided on the base element of the milling tool holder, which supporting area provides appropriate stabilized guidance for the tool replacement device.

Abstract: A refuse compactor, comprising a machine frame, transportation devices, a drive motor, a driver's cab which is arranged on the machine frame, and an air intake device with at least one intake opening, wherein the air intake device is arranged in the forward direction behind the driver's cab and extends at least partly over the rear side of the driver's cab up to the roof of the driver's cab in the vertical direction.

Abstract: The present invention relates to a method for controlling a work train including a self-propelled road paver and a self-propelled feeder travelling ahead of the road paver, to a work train comprising a self-propelled road paver and a self-propelled feeder, as well as to a feeder and to a road paver for such a work train. According to one aspect of the present invention, the control of the road paver is effected automatically, to which end particularly the position of the feeder is determined and travel commands for the road paver are generated based on this information.

Abstract: The present invention relates to a self-propelled ground milling machine for treatment of ground surfaces by means of a milling device, a transportation means and a drive device for driving the transportation means and the milling device. The milling device is mounted on a ground milling machine frame and can be switched between a working position, in which the milling device is in operative contact with the ground surface and a maneuvering position, in which the milling device is not in operative contact with the ground surface. The drive device comprises a drive control unit, which controls the driving power of the drive device. The ground milling machine further comprises a ground milling machine control unit.

Abstract: The present invention relates to a milling drum for a ground milling machine, wherein a material guiding device is provided, which diverts the milled material in the direction of stagger of milling devices disposed one behind the other, as regarded in the direction of rotation. For this purpose, in particular, a wear plate is provided, which can be selectively replaced on the material guiding device. A further aspect of the present invention relates to such a material guiding device and also to a wear plate for such a material guiding device.

Abstract: Described is an ejector unit for a milling drum of a mobile ground preparation machine comprising a discharge side and a reverse side that is opposite to the discharge side. It comprises a basic unit on the drum and an ejector plate, which is held on the basic unit by means of screw-threaded bolts. There is a positive fit between the basic unit and the ejector plate, which positive fit involves at least one pin, on the one hand, and at least one complementary cylindrical counterbore on the other hand, whereby the at least one pin and the at least one ejector are oriented so as to be coaxial to the longitudinal axis of the screw-threaded bolts. Preferably, a shoulder is also provided along the base of the basic unit on its side facing the ejector plate, and the ejector plate has at least one complementary shoulder, whereby the shoulder on the basic unit and the at least one shoulder on the plate have meshing regions, which in the mounted state prevent transverse displacements in three directions.

Abstract: A soil compaction machine, in particular, a vibration compactor, is provided which comprises a vibration exciter for generating different kinds of exciter vibration having a first and a second imbalance shaft, which are arranged in parallel to one another. Each imbalance shaft is driven via a separate motor, so that the rotational velocity, the rotational direction, and the phase relation of each of the imbalance shafts can be changed separately.

Abstract: The present invention relates to a rotor hood for a milling apparatus, with a front hood part, a rear hood part and two side hood parts, the front and the rear hood part enclosing together with the two side hood parts a working space that is open at the bottom, further comprising a stripping device which is mounted on the rotor hood and which forms the rear lower edge of the rotor hood in the working direction. The present invention further relates to a construction machine with a milling apparatus and such a rotor hood and a method for operating a milling apparatus with a rotor hood.

Abstract: The invention relates to a construction vehicle for preparation of a road surface, more particularly a road milling machine or a ground stabilizer, comprising a rotatably driven milling cutter, more particularly a milling rotor or a milling drum, and a drive unit for a milling tool, comprising a drive motor and a gear unit interposed between the drive motor and the milling cutter, wherein the gear unit is in the form of a cogwheel gearbox and comprises at least two gear pairings having different gear ratios, wherein the gear pairings can be selectively engaged to form part of the drive connection or disengaged therefrom.

Abstract: A hydraulic control arrangement for activating a double-acting actuating cylinder, which is connected on the piston side to a road finisher and on the piston-rod side to a screed of the road finisher, is provided. The hydraulic control arrangement includes a supply connection, a tank connection and two consumer connections, in which a loading pressure or a relief pressure is applied to the piston of the actuating cylinder via the consumer connections. The loading pressure or relief pressure is controlled as a function of a defined operating state, and, in a controlling-the-screed-load operating state, the relief pressure supplied to the actuating cylinder on the piston-rod side is controlled via a proportional pressure control valve.

Abstract: The present invention relates to a work train, a device and a method for distance measurement between a transport device and a milling device. During the loading of a transport device with milled material from the milling device, the operator of the milling device normally transmits control commands to the transport device driver for coordination of the loading process. Through the automated distance measuring between the transport device and the milling device and control of a display device according to the present invention, this task is taken over from the operator of the milling device, who can concentrate on the actual milling process.

Abstract: The present invention relates to a road finisher comprising a screed plate and/or a tamper bar and also to a screed plate and/or tamper bar comprising a heating layer applied by thermal spraying.

Abstract: The present invention relates to a device and method for ascertaining the steering angle (?3) of at least one steerable wheel of a set of steerable wheels of a machine that can be directionally controlled, which machine comprises at least said set of steerable wheels and at least one set of drivable wheels showing a specific wheelbase (a1) relative to said steerable wheels and spaced from one another by a specific track width (b1), wherein by means of an ascertained wheel velocity difference of the two driven wheels a yaw rate (?) and a real circle radius (r1) of the driven wheel on the inside of the curve are ascertained. It is then possible to ascertain the steering angle (?) from these values by way of the geometrical relationship of wheelbase (a1) and track width (b1) of the machine.

Abstract: The present invention relates to an interchangeable holder system comprising a basic module and an interchangeable holder for the accommodation of a cutting tool, which interchangeable holder is capable of being attached to the basic module, for the purpose of preparing ground surfaces, and to a construction machine, more particularly a stabilizer, a recycler, or a cold milling machine, comprising a milling device comprising such an interchangeable holder system.

Abstract: There are described a height adjusting device for an extendable screed plate for a road finisher and a road finisher comprising such a device. A ground element of the extendable screed plate is disposed with two pairs of worm gears on a top part of the extendable screed plate for vertical displacement thereon, wherein the worm gears of each pair are interconnected by a power transmission for concomitant actuation. Each pair is provided with a releasable clutch, preferably a conical clutch, by means of which the connection between an adjusting member of a pair and the associated transmission gear can be broken.